<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>后盾人</title>
    <style>
        /* span::after {
            content: "\2193";
            color: red;
            font-size: 300px;
        } */
        div {
            border: solid 1px #ddd;
            width: 130px;
        }

        div>input[type="text"] {
            border: none;
            outline: none;
        }

        div>input[type="text"]+span:after {
            content: "\293D";
            cursor: pointer;
        }
    </style>
</head>

<body>
    <div>
        <input type="text">
        <span></span>
    </div>
</body>

</html>